Tender For supply of air flow indicator gauge self illuminated with led arrangement to rdso's drg. no.- skdp-3510 (alt.-3) & skdp-3518 (alt.-2) and acceptance as per rdso's inspection plan no.- mp-tp-14 of july-2000 (rev.-0) (amd. no.- 2) of june-2003 for wap4 & wag7 locos.